I was working on this today and realized there are highlights on the shoes so I could use it for Illustration Friday! The pencil lines and markings are due to work-in-progress. The original art is 2.5x3.5 inches but was designed to crop at closer to 2x3".
I found a picture of these shoes in the September 2011 issue of "Vogue". This is a bit of an interpretation because the shoes were very small in the photo, but they really caught my eye! They were designed by Tabitha Simmons for Creatures of the Wind.